Need some advice here.
I had my D7000 Flash Sync Speed set at 1/250, using a Yongnuo RF-603 as wireless flash trigger to trigger the Yongnuo YN-560III wirelessly. The flash triggered but the picture came out black. After checking, I notice that the picture was taken with a shutter speed of 1/500 on P Mode. Can someone kindly advice me what went wrong?
Why does the flash sync speed setting has no effect on the shutter speed when using wireless flash trigger & external flash?